To all whom it may concern



@niet gione lutent @ffies SAMUEL RUE', Jlt., Oli` PAOLI, ASSIGNOR T0 HIMSELF, SAMUEL McCAMBRIDG-E, AND EDWARD G. MARTIN,l OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 81,822, dated September 1, 1868.

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Be it known that I, SAMUEL RUE, Jr., of Paoli, in the county of Chester, and Ststeoi Pennsylvania, have invented a new and useful Improvement in Injectors for Steam-Boilers; and I do hereby declare that the following is 4a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists, in the rst place, in the construction of the injector with valves and valvo-seats, and dispensing with the nozzles heretofore used in injectors, the said valves and valve-seats being formed on the ends of an intermediate adjustable pipe, between the steam and `feed-pipes,at one end, and the supply or discharge-pipe, which leads to the boiler, at the other end, and on the ends of hpllow plugs, which are combined with the steam and discharge-pipes.

v Secondly, the construction of the said intermediate adjustable pipe, which is smaller at its receiving-end vthsvjh'e' steom=pipe; so es to obtain an incrcascdpressure of steam.

Thirdly, in the construction of said intermediate adjustable pipe with s. diminished taper from its receiving or rear end to its forward end, so as to obtain agreater pressure at its receivin end, upon the stream of water, than is `communicated to the same at the discharging-end, and `thus to resist the check of the check-valve, between the injector and the boiler.

Fourthly, in the construction and arrangement of the said intermediate adjustable pipe in relation to the supply or discharge-pipe, leading to the boiler, as to admit of the front valveentirely closing, when there is no pressure of steam, to prevent the water passing through the overliow, and to make it take a straightforward course through the supply-pipe into the boiler.

Fifthly, in the combination of the air and water-chamber with the-injector, opposite the feed-pipe, to commence the supply of water to the injector.

In the accompanying drawings- Figure 1 is a vertical section of the injector.

Figure 2 is a cross-section at the line :v of fig. 1.

Like letters in both figures indicate the same parts.

A is the bed-plate, with the front end of which is connected the casting, B, and with its rear end the casting, C. n

Tho casting B has in its front end the hollow plug D, with which is connected the supply or discharge-pipe E, which leads to the boiler, the connection being made by means ci' the coupling F.

The casting has in its rear end s. stalling-box, G, and the front end of the casting C is provided with n stuffing-box, G.

There is an adjustable intermediate pipe, II, between the steam-pipe and feed-pipe, at its rear end, and the supply-pipe, which leads tothe boiler, at'its front end. The said pipe H is sustained by the stuing-boxes G and G.

The rear 'end of the casting C is provided with va hollow plug, D', to which is connected the front end of the steam-pipe l, by means of the coupling F. The coupling also holds the said plug rmly, in connection with the casting C, as seen in iig. 1, and the coupling F in like manner holds the plug D, in connection with the casting B. p l

To the branch J, of thocnsting G, the front end of the feed-pipe is connected.

Opposite the branch-J, there is a branch-pipe, J', to which is connected a chamber, K, into which water iirst rushes when let into the injector from the feed-pipe, the air in said chamber forming a cushion for the water. vThe object of the said air and water-chamber is to commence the supply oi water to the injector, as hereinafter described. l

I dispense with the use f the nozzles heretofore used in injectors, and employ valves for opening and vclosing the communications between the passages, as follows l of Jang, 186s.

I construct the stationary plug D', in the-casting C, with a valve, L, which has its sent, a, in the rear end 'of the adjustnbie pipo H.

The said pipe is adjusted, by means of the lever M, to regulate the How of water from tho feed-pipe, and is then held securely in position bymeans of thc set-screw N, in the casting B.

There is a valve, L', on the front end oi' the pipe H, the seat, a', of which is in the contiguous end of the plug D.

When there is nopressure of steam` the valve L is closed, so as to cut off the communication between the pipe IVI andthe overow O, and make the stream of water through said pipe H take a straightforward course throughk the supply or discharge-pipe into the boiler..

` I make the front ondof the steam-pipe, or of the plug D, ef larger bore than the bore in the rear end of the pipe H; su as to increase the pressure upon the water ns it enters said pipe from the feed-pipe. A v

The'pipe H has a diminished taper from its rear to its front end, as seen in iig. 1, so as to hn-ve un increased pressure from its front to its rear end, to resist the check ofthe cheek-valve, between the injector and the boiler.

The plugs D and D', as Well as the adjustable pipe H, are removable, so as to provide for supplying their places with other pieces ofan increased or diminished bore, ns may be required, in altering the capseity ofthe injector, without altering. the dimensions of its other parts.` l

When water is first let into the injector from the feed-pipe, as before stated, it rushes into the chamber K, opposite to the feed-pipe, the air insnid chamber forming a cushion to the water, and preventing a sudden jar. The air and water contained in said chamber afterwards, in starting the injector, commence their action, the air forcing the water into the pipe H, and thereby facilitating the How from the feed-pipe.

I do not claim anything contained in the patents of J1. Gifford, dated April 24, 1860; of James Gresham, two patents, dated February 11, 1863; of William Sellers, dated July 21,1865; of James Gresham, dated` August 7, 1866; and that ot' John Robinson and James Gresham, dated May 29, 1866.

What I claim as my invention, and desire to secure'by Letters Patent, is

1. lThe arrangement of the adjustable intermediate pipe H with the plugs D and D', when said parte are provided with the valves L and L and the valvc-seots a and a', substantially in the manner hcreinbeforo described..

2. The arrangement of the adjustable pipo H, being smaller at its rooeiving-end,than the front end of the steam-pipe, whereby te increase the pressure upon the water through the former, substantially as specified.

8. Tho diminished bore ofthepipe H, for effecting a greater pressure at its receiving than at its dischargingend, whereby to resist the cheek of the check-valve, between the injector and tho boiler, substantially as described.

4. The combination of theair and wateiwebamber yK with the injector, opposite the feed-pipe', whereby to facilitate the supply of water to the injector at the commencing of its flow, substantially as described.

In testimony that the above is my invention, I have hereunto set my band and affixed my seal, this 18th day Witnesses:

STEPHEN Us'rrex, Joux Wurm. 

